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/*
* Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
*
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation on the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* Author:
* Rickard E. (Rik) Faith <faith@redhat.com>
*
*/
/** \file
* Provides DPMS support and unifies all DPMS and other screen-saver
* support in one file. If -dpms is given on the command line, or the
* Xdmx server is not compiled with DPMS support, then the DPMS extension
* does not work for clients, but DPMS on the backends is still disables
* (and restored at Xdmx server shutdown time).
*/
#ifdef HAVE_DMX_CONFIG_H
#include <dmx-config.h>
#endif
#include "dmx.h"
#include "dmxdpms.h"
#include "dmxlog.h"
#include "dmxsync.h"
#ifdef DPMSExtension
#include "dpmsproc.h"
#endif
#include "windowstr.h" /* For screenIsSaved */
#include <X11/extensions/dpms.h>
static unsigned long dpmsGeneration = 0;
static Bool dpmsSupported = TRUE;
static void _dmxDPMSInit(DMXScreenInfo *dmxScreen)
{
int event_base, error_base;
int major, minor;
CARD16 level, standby, suspend, off;
BOOL state;
const char *monitor;
if (dpmsGeneration != serverGeneration) {
dpmsSupported = TRUE; /* On unless a backend doesn't support it */
dpmsGeneration = serverGeneration;
}
#ifdef DPMSExtension
if (DPMSDisabledSwitch) dpmsSupported = FALSE; /* -dpms turns off */
#endif
dmxScreen->dpmsCapable = 0;
if (!dmxScreen->beDisplay) {
dmxLogOutput(dmxScreen,
"Cannot determine if DPMS supported (detached screen)\n");
dpmsSupported = FALSE;
return;
}
if (!DPMSQueryExtension(dmxScreen->beDisplay,
&event_base, &error_base)) {
dmxLogOutput(dmxScreen, "DPMS not supported\n");
dpmsSupported = FALSE;
return;
}
if (!DPMSGetVersion(dmxScreen->beDisplay, &major, &minor)) {
dmxLogOutput(dmxScreen, "DPMS not supported\n");
dpmsSupported = FALSE;
return;
}
if (!DPMSCapable(dmxScreen->beDisplay)) {
dmxLogOutput(dmxScreen, "DPMS %d.%d (not DPMS capable)\n",
major, minor);
dpmsSupported = FALSE;
return;
}
DPMSInfo(dmxScreen->beDisplay, &level, &state);
DPMSGetTimeouts(dmxScreen->beDisplay, &standby, &suspend, &off);
DPMSSetTimeouts(dmxScreen->beDisplay, 0, 0, 0);
DPMSEnable(dmxScreen->beDisplay);
DPMSForceLevel(dmxScreen->beDisplay, DPMSModeOn);
dmxScreen->dpmsCapable = 1;
dmxScreen->dpmsEnabled = !!state;
dmxScreen->dpmsStandby = standby;
dmxScreen->dpmsSuspend = suspend;
dmxScreen->dpmsOff = off;
switch (level) {
case DPMSModeOn: monitor = "on"; break;
case DPMSModeStandby: monitor = "standby"; break;
case DPMSModeSuspend: monitor = "suspend"; break;
case DPMSModeOff: monitor = "off"; break;
default: monitor = "unknown"; break;
}
dmxLogOutput(dmxScreen,
"DPMS %d.%d (%s, %s, %d %d %d)\n",
major, minor, monitor, state ? "enabled" : "disabled",
standby, suspend, off);
}
/** Initialize DPMS support. We save the current settings and turn off
* DPMS. The settings are restored in #dmxDPMSTerm. */
void dmxDPMSInit(DMXScreenInfo *dmxScreen)
{
int interval, preferBlanking, allowExposures;
/* Turn off DPMS */
_dmxDPMSInit(dmxScreen);
if (!dmxScreen->beDisplay)
return;
/* Turn off screen saver */
XGetScreenSaver(dmxScreen->beDisplay, &dmxScreen->savedTimeout, &interval,
&preferBlanking, &allowExposures);
XSetScreenSaver(dmxScreen->beDisplay, 0, interval,
preferBlanking, allowExposures);
XResetScreenSaver(dmxScreen->beDisplay);
dmxSync(dmxScreen, FALSE);
}
/** Terminate DPMS support on \a dmxScreen. We restore the settings
* saved in #dmxDPMSInit. */
void dmxDPMSTerm(DMXScreenInfo *dmxScreen)
{
int timeout, interval, preferBlanking, allowExposures;
if (!dmxScreen->beDisplay)
return;
XGetScreenSaver(dmxScreen->beDisplay, &timeout, &interval,
&preferBlanking, &allowExposures);
XSetScreenSaver(dmxScreen->beDisplay, dmxScreen->savedTimeout, interval,
preferBlanking, allowExposures);
if (dmxScreen->dpmsCapable) {
/* Restore saved state */
DPMSForceLevel(dmxScreen->beDisplay, DPMSModeOn);
DPMSSetTimeouts(dmxScreen->beDisplay, dmxScreen->dpmsStandby,
dmxScreen->dpmsSuspend, dmxScreen->dpmsOff);
if (dmxScreen->dpmsEnabled) DPMSEnable(dmxScreen->beDisplay);
else DPMSDisable(dmxScreen->beDisplay);
}
dmxSync(dmxScreen, FALSE);
}
/** Called when activity is detected so that DPMS power-saving mode can
* be deactivated. */
void dmxDPMSWakeup(void)
{
if (screenIsSaved == SCREEN_SAVER_ON)
SaveScreens(SCREEN_SAVER_OFF, ScreenSaverReset);
#ifdef DPMSExtension
if (DPMSPowerLevel) DPMSSet(0);
#endif
}
#ifdef DPMSExtension
/** This is called on each server generation. It should determine if
* DPMS is supported on all of the backends and, if so, return TRUE. */
Bool DPMSSupported(void)
{
return dpmsSupported;
}
/** This is used by clients (e.g., xset) to set the DPMS level. */
void DPMSSet(int level)
{
int i;
if (!dpmsSupported) return;
if (level < 0) level = DPMSModeOn;
if (level > 3) level = DPMSModeOff;
DPMSPowerLevel = level;
for (i = 0; i < dmxNumScreens; i++) {
DMXScreenInfo *dmxScreen = &dmxScreens[i];
if (dmxScreen->beDisplay) {
DPMSForceLevel(dmxScreen->beDisplay, level);
dmxSync(dmxScreen, FALSE);
}
}
}
#endif
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